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- Title
Cu<sub>x</sub>Co<sub>1− x</sub>O Nanoparticles on Graphene Oxide as A Synergistic Catalyst for High-Efficiency Hydrolysis of Ammonia-Borane.
- Authors
Feng, Kun; Zhong, Jun; Zhao, Binhua; Zhang, Hui; Xu, Lai; Sun, Xuhui; Lee, Shuit ‐ Tong
- Abstract
Ammonia-borane (AB) is an excellent material for chemical storage of hydrogen. However, the practical utilization of AB for production of hydrogen is hindered by the need of expensive noble metal-based catalysts. Here, we report Cu xCo1− xO nanoparticles (NPs) facilely deposited on graphene oxide (GO) as a low-cost and high-performance catalyst for the hydrolysis of AB. This hybrid catalyst exhibits an initial total turnover frequency (TOF) value of 70.0 (H2) mol/(Cat-metal) mol⋅min, which is the highest TOF ever reported for noble metal-free catalysts, and a good stability keeping 94 % activity after 5 cycles. Synchrotron radiation-based X-ray absorption spectroscopy (XAS) investigations suggested that the high catalytic performance could be attributed to the interfacial interaction between Cu xCo1− xO NPs and GO. Moreover, the catalytic hydrolysis mechanism was studied by in situ XAS experiments for the first time, which reveal a significant water adsorption on the catalyst and clearly confirm the interaction between AB and the catalyst during hydrolysis.
- Subjects
NANOPARTICLES; AMMONIA; BORANES; GRAPHENE oxide; CATALYTIC hydrolysis
- Publication
Angewandte Chemie, 2016, Vol 128, Issue 39, p12129
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201604021